EP1775721A3 - Verfahren zum Schreiben des Bezugsservosignals von Festplattenlaufwerken und dafür geeignete Vorrichtung - Google Patents

Verfahren zum Schreiben des Bezugsservosignals von Festplattenlaufwerken und dafür geeignete Vorrichtung Download PDF

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Publication number
EP1775721A3
EP1775721A3 EP06122112A EP06122112A EP1775721A3 EP 1775721 A3 EP1775721 A3 EP 1775721A3 EP 06122112 A EP06122112 A EP 06122112A EP 06122112 A EP06122112 A EP 06122112A EP 1775721 A3 EP1775721 A3 EP 1775721A3
Authority
EP
European Patent Office
Prior art keywords
servo signal
writing
reference servo
head
hard disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP06122112A
Other languages
English (en)
French (fr)
Other versions
EP1775721A2 (de
Inventor
Kwang-Jo Jung
Da-Woon Chung
Byoung-Kul Ji
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1775721A2 publication Critical patent/EP1775721A2/de
Publication of EP1775721A3 publication Critical patent/EP1775721A3/de
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
    • G11B5/59661—Spiral servo format
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/04—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw
    • G11B21/06—Automatic feed mechanism producing a progressive transducing traverse of the head in a direction which cuts across the direction of travel of the recording medium, e.g. helical scan, e.g. by lead-screw the record carrier having mechanical means to ensure traverse movement of the head, e.g. grooves
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/596—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following for track following on disks
    • G11B5/59633—Servo formatting
EP06122112A 2005-10-11 2006-10-11 Verfahren zum Schreiben des Bezugsservosignals von Festplattenlaufwerken und dafür geeignete Vorrichtung Ceased EP1775721A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020050095495A KR100652436B1 (ko) 2005-10-11 2005-10-11 하드디스크 드라이브의 레퍼런스 서보 신호 기록 방법 및이에 적합한 장치

Publications (2)

Publication Number Publication Date
EP1775721A2 EP1775721A2 (de) 2007-04-18
EP1775721A3 true EP1775721A3 (de) 2007-08-22

Family

ID=37605712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06122112A Ceased EP1775721A3 (de) 2005-10-11 2006-10-11 Verfahren zum Schreiben des Bezugsservosignals von Festplattenlaufwerken und dafür geeignete Vorrichtung

Country Status (5)

Country Link
US (1) US7333286B2 (de)
EP (1) EP1775721A3 (de)
JP (1) JP5112672B2 (de)
KR (1) KR100652436B1 (de)
CN (1) CN1971714B (de)

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US7561361B1 (en) * 2005-10-31 2009-07-14 Marvell International Ltd. Dynamic synchronization of timing signals
US7466095B1 (en) * 2005-11-28 2008-12-16 Marvell International Ltd. Voice coil motor control system and method using pulse width modulation
US7936530B1 (en) * 2007-08-20 2011-05-03 Marvell International Ltd. Method to write ramp-track
US7995305B1 (en) 2007-08-20 2011-08-09 Marvell International Ltd. Calibrating voice coil motors
US20090086357A1 (en) * 2007-09-28 2009-04-02 Toshiba America Information Systems, Inc. In drive written spirals for self servo writing
US7843662B1 (en) 2008-06-10 2010-11-30 Western Digital Technologies, Inc. Servoing on concentric servo sectors of a first disk surface to write a spiral servo track to a second disk surface
US8223452B1 (en) * 2008-09-16 2012-07-17 Marvell International Ltd. Writing and reading user data using servo spirals
KR20100114762A (ko) 2009-04-16 2010-10-26 삼성전자주식회사 하드디스크 드라이브의 서보 패턴 삭제방법 및 서보 패턴 삭제장치
KR20110087000A (ko) * 2010-01-25 2011-08-02 삼성전자주식회사 하드디스크 드라이브의 서보 패턴 기록 방법 및 그에 의해 제조되는 하드디스크 드라이브
US8331056B2 (en) * 2010-03-05 2012-12-11 Wd Media, Inc. Spin stand comprising a dual disk clamp
US8218260B2 (en) * 2010-03-05 2012-07-10 Wd Media, Inc. Processing disks on a spin stand
US8582229B1 (en) * 2010-09-27 2013-11-12 Western Digital Technologies, Inc. Pushpin assembly
US8634283B1 (en) * 2011-08-08 2014-01-21 Western Digital Technologies, Inc. Disk drive performing in-drive spiral track writing
US8917474B1 (en) 2011-08-08 2014-12-23 Western Digital Technologies, Inc. Disk drive calibrating a velocity profile prior to writing a spiral track
US8634154B1 (en) 2011-08-08 2014-01-21 Western Digital Technologies, Inc. Disk drive writing a sync mark seam in a bootstrap spiral track
US8537486B2 (en) 2011-08-10 2013-09-17 Western Digital Technologies, Inc. Disk drive writing spiral tracks on a slave surface using repeatable runout compensation for a master surface
US8665551B1 (en) 2011-12-22 2014-03-04 Western Digital Technologies, Inc. Disk drive adjusting gain and offset of BEMF velocity sensor during self writing of spiral tracks
US8724245B1 (en) 2012-06-21 2014-05-13 Western Digital Technologies, Inc. Disk drive employing overlapping servo zones to facilitate servo zone crossing
US8995075B1 (en) 2012-06-21 2015-03-31 Western Digital Technologies, Inc. Disk drive adjusting estimated servo state to compensate for transient when crossing a servo zone boundary
US8780477B1 (en) 2012-06-21 2014-07-15 Western Digital Technologies, Inc. Disk drive adjusting servo timing to compensate for transient when crossing a servo zone boundary
US8743504B1 (en) * 2012-07-25 2014-06-03 Western Digital Technologies, Inc. Servoing on zoned concentric servo sectors of a first disk surface to write a spiral servo track to a second disk surface
US8902535B1 (en) 2012-12-12 2014-12-02 Western Digital Technologies, Inc. Disk drive adapting feed-forward compensation using iterative learning control over segments of seek length
US9076490B1 (en) 2012-12-12 2015-07-07 Western Digital Technologies, Inc. Disk drive writing radial offset spiral servo tracks by reading spiral seed tracks
US8896957B1 (en) 2013-05-10 2014-11-25 Western Digital Technologies, Inc. Disk drive performing spiral scan of disk surface to detect residual data
US8941939B1 (en) 2013-10-24 2015-01-27 Western Digital Technologies, Inc. Disk drive using VCM BEMF feed-forward compensation to write servo data to a disk
US9208810B1 (en) 2014-04-24 2015-12-08 Western Digital Technologies, Inc. Data storage device attenuating interference from first spiral track when reading second spiral track
US8982490B1 (en) 2014-04-24 2015-03-17 Western Digital Technologies, Inc. Data storage device reading first spiral track while simultaneously writing second spiral track
US9245560B1 (en) 2015-03-09 2016-01-26 Western Digital Technologies, Inc. Data storage device measuring reader/writer offset by reading spiral track and concentric servo sectors
JP2021192325A (ja) * 2020-06-05 2021-12-16 株式会社東芝 磁気ディスク装置
CN115061415B (zh) * 2022-08-18 2023-01-24 赫比(成都)精密塑胶制品有限公司 一种自动流程监控方法、设备以及计算机可读存储介质

Citations (8)

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US5583712A (en) * 1993-06-24 1996-12-10 Maxtor Corporation Magnetic recording system having spiral tracks
US5668679A (en) * 1995-12-21 1997-09-16 Quantum Corporation System for self-servowriting a disk drive
US6304407B1 (en) * 1998-10-27 2001-10-16 Maxtor Corporation Self-writing of servo patterns based on printed reference pattern in rotating disk drive
EP1207618A1 (de) * 2000-11-20 2002-05-22 STMicroelectronics S.r.l. Schaltkreis zur Rückgewinnung von Geschwindigkeit eines Gleichstrommotors und Verfahren zum Benutzen dieses Schaltkreises
JP2002288956A (ja) * 2001-03-23 2002-10-04 Toshiba Corp 磁気ディスク装置及び該装置におけるサーボ情報記録方法
US6476989B1 (en) * 1996-07-09 2002-11-05 International Business Machines Corporation Radial self-propagation pattern generation for disk file servowriting
US6479954B1 (en) * 1999-07-07 2002-11-12 Stmicroelectronics S.R.L. Control and drive system for a single winding electromagnetic actuator employing a single multifunction operational amplifier
US6507450B1 (en) * 1999-06-11 2003-01-14 Western Digital Technologies, Inc. Method of continuously recording servo bursts along one continuous, single helix spiral

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US6587293B1 (en) * 1999-05-07 2003-07-01 Seagate Technology Llc Method for servo writing servo pattern at a desired speed
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Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5583712A (en) * 1993-06-24 1996-12-10 Maxtor Corporation Magnetic recording system having spiral tracks
US5668679A (en) * 1995-12-21 1997-09-16 Quantum Corporation System for self-servowriting a disk drive
US6476989B1 (en) * 1996-07-09 2002-11-05 International Business Machines Corporation Radial self-propagation pattern generation for disk file servowriting
US6304407B1 (en) * 1998-10-27 2001-10-16 Maxtor Corporation Self-writing of servo patterns based on printed reference pattern in rotating disk drive
US6507450B1 (en) * 1999-06-11 2003-01-14 Western Digital Technologies, Inc. Method of continuously recording servo bursts along one continuous, single helix spiral
US6479954B1 (en) * 1999-07-07 2002-11-12 Stmicroelectronics S.R.L. Control and drive system for a single winding electromagnetic actuator employing a single multifunction operational amplifier
EP1207618A1 (de) * 2000-11-20 2002-05-22 STMicroelectronics S.r.l. Schaltkreis zur Rückgewinnung von Geschwindigkeit eines Gleichstrommotors und Verfahren zum Benutzen dieses Schaltkreises
JP2002288956A (ja) * 2001-03-23 2002-10-04 Toshiba Corp 磁気ディスク装置及び該装置におけるサーボ情報記録方法

Also Published As

Publication number Publication date
CN1971714B (zh) 2010-09-01
EP1775721A2 (de) 2007-04-18
US7333286B2 (en) 2008-02-19
CN1971714A (zh) 2007-05-30
JP5112672B2 (ja) 2013-01-09
US20070081268A1 (en) 2007-04-12
JP2007109376A (ja) 2007-04-26
KR100652436B1 (ko) 2006-12-01

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